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lead, phosphorus, barium, mercury, beryllium, cadmium, etc.
missouri just fined an outfit for improper disposal and gave the owner jail time for it. wisconsin dnr can fine you, charge you and confiscate everything.
if you do a little research, you can find places that will take them for free as long as you give them the recycling credits. dell is doing a lot of that right now.
Used to take copper out of tvs and computer monitors until I discovered how much of an environmental hazard they are. Now I charge $5 per tv (less than the transfer station), then take them to Goodwill where they have a free recycle program.
Its a weak link. Theres different glass in the front of the screen & the rear of the screen.Quote:
Originally Posted by IdahoScrapper
Because the glass is welded together when its hot, as its cooled down theres been different rates of contraction of the glass.
When its normal cold, theres a stressed band around the screen at the join.
Now, since the tubes under vacuum all that needs to happen is for something to break the tube at the join.
That causes it to break 360 degrees around the tube & then the vacuum takes over & tries to suck the fount of the screen inwards.
Then you now have pressure in two different directions, in & out, as the screen explodes/implodes it shoots out the finger sized shards of razor sharp glass, at high speed, for about 6+ feet.
Along with the shockwave it causes too.
I have been told by TV techs about the apron & face mask etc. Its all 'Health & safety' workshop practices.Quote:
Originally Posted by TheHoss
I have seen the tubes explode, I nearly sh@t myself the first time it happened.
Since then I have seen a few more explode & know why it happens.
If anyone doesn't be-leave me, try it out. Just remember the safety hazards as I have said & please get a video of it happening.
I'd suggest the TV sitting like normal on the ground, but with the top 3/4'rs - 7/8ths of the case taken off.
And just tap it solidly at the 1/2way mark up the metal band.
The bands probably also compressing the screen.
I stand by (sic) what I have said before, those CRT tubes, when still under vacuum, are deadly dangerous.
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Have you ever seen safety glass break up, its under vacuum & it still explodes, same effect but with a greater 'volume' of void inside the tube.
All the safety glass needs is a weak point to break up, thats why ceramic will break the safety glass, it makes a weak point & the vacuum pressure causes the weak point to travel all over the piece of glass, breaking it up into pieces.
Busting then at the yokes will cause the glass to break there & the gas gets let in quickly. That kills the vacuum effect.Quote:
Originally Posted by IdahoScrapper
I'm hoping you mean at the rear of the coils etc, though I do see a lot busted just under the yoke.
I tap what I call the yoke assembly (rear most part that is a copper/ferrite cone) with a hammer to break the seal and let off the vacuum. Then I toss the yoke into the pile that gets further broken down at a later time.
Should I be doing it a different way?
Yeah Idaho, ya know that little "suction cup"? Take a pair of needle nose pliers, take the cup off. Then take an "all" or a screw driver, put it in the hole, use a hammer and pierce the thin metal layer. It'll "air" the tube. That's what i do, all day long.
WTH was that white ''light'' type flash? jeebusQuote:
Originally Posted by Filthy
That was the phosphor.Quote:
WTH was that white ''light'' type flash? jeebus
Compliments of Wiki;Quote:
Phosphorescent materials are known for their use in radar screens and glow-in-the-dark toys, whereas fluorescent materials are common in CRT and plasma video display screens, sensors, and white LEDs.
Phosphors are often transition metal compounds or rare earth compounds of various types.
There is more total vaccuum the larger the surface area. Also the crt is normaly under vaccuum so upon breakage of the larger surface area, shrapnel is first drawn inward, then it bounces violently off the inside and back out until all of the energy of the implosion is spent. I have released the vacuum before by cracking the little tip at the yoke. Now I am concered about polution. If the yoke end was later sealed with silicone; would that be a better practice?